SRY and the Standoff in Sex Determination

Overview

Journal Mol Endocrinol

Specialties Endocrinology
Molecular Biology

Date 2007 Aug 2

PMID 17666585

Citations 34

Authors

Leo DiNapoli

Blanche Capel

Affiliations

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Abstract

SRY was identified as the mammalian sex-determining gene more than 15 yr ago and has been extensively studied since. Although many of the pathways regulating sexual differentiation have been elucidated, direct downstream targets of SRY are still unclear, making a top down approach difficult. However, recent work has demonstrated that the fate of the gonad is actively contested by both male-promoting and female-promoting signals. Sox9 and Fgf9 push gonads towards testis differentiation. These two genes are opposed by Wnt4, and possibly RSPO1, which push gonads toward ovary differentiation. In this review, we will discuss the history of the field, current findings, and exciting new directions in vertebrate sex determination.

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